Antique Horology- The Horological Foundation's directory of web sites for watches, clocks, instruments and barometers.pop
Clocks and Time- Horological index for organizations, clock and watch museums, related software, mailing lists and links. Maintained by Gordon T. Uber.pop
Daylight Saving Time- History of daylight saving time and how we use it to save energy.pop
Horology.com- Horology is the science of time, timekeeping and timekeepers. Organized collection of links to horological websites globally.pop
Mark Frank's Home Page- Website showing the restoration of a french flat bed tower clock in great detail, step by step, as well as other information and links of tower clock sites.pop
Online Clock Building- Watch a master clockmaker building a clock movement from scratch. Hundreds of photos and drawings, plus a complete description of the process and CAD plans.pop
Pocket Horology- National chapter of the NAWCC dedicated to collaborative research on the history and horology of pocket watches.pop
R.A. Braithwaite- Educational site Elliott clocks, how they are built and how to look after them.pop
UNITAS Reference Site- UNITAS wristwatch and pocketwatch movements from 1898 to the present.pop
24 hour analog clocks- The 24 hour analog clock and watch site. History, software, and the places to find clocks with 24 h dials.
Abbey Clock Clinic - Mark Headrick's Horology Page- Traditional horology website with information and mantainance tips. Technical descriptions and troubleshooting of escapements. Grandfather clocks, wall clocks, and watches.
Allan Variance -- Overview by David W. Allan- Core algorithm of international time scale has multiple metrology applications, from atomic clock frequency characterization to definition of the meter. Equation, explanation and publications.
Clock a History- A brief history of time keeping. How mankind has used the sun, water, candles, sand, pendulums, springs, electronics, tuning forks, and quartz crystals, to tell time.
Cumbria Clock Company- Company specialized in all aspects of work connected with church clocks, public clocks, and tower clocks which includes the full historical restoration of antique clock movements.
Hampton Court Clock- The story of the famous Astronomical clock at Hampton Court Palace. By the author of the original official guide books with the extra omitted information.
Horology - A Great Hobby- A very basic introduction to how electric clocks work, with animated pictures. Also a collection of cheap electric clocks with pictures and descriptions.
How Stuff Works: Time- Complete five-part explanation of time and how it is measured, including information about clocks, time zones, calendars, BC and AD.
Jens Olsen's Astronomical Clock- Description of the restoration of Jens Olsen's Astronomical Clock, a masterpiece in Copenhagen City Hall that consists of 15.448 individual parts.
Louis Essen- Autobiography of the physicist who built the world's first operational atomic clock.
On Time- The Smithsonian Institute's exhibition on the changing ways we have measured, used, and thought about time over the past three hundred years.
Pulsynetic Electric Clocks- Description, pictures and diagrams of many of the horological products made before 1945 By Gent's of Leicester GB, including a rare Observatory controlled transmitter.
The History of Clocks and Watches- Learn about the history of clocks and watches, and discover the evolution of timekeeping devices from the first primitive sundials to the ultramodern atomic clocks. Includes a timeline.